The OST converter freeware app is always recommended to use the most reliable and trusted solution for conversion.  ost to pst converter full version tool is compatible with all versions of MS Outlook versions. The client can straight transfer OST file to cloud-based applications G-Suite, Gmail, Yahoo, AOL, Office365 & Live Exchange Server. Its app effortlessly convert OST to PST, office 365, Live Exchange server, Gmail, OLM, NSF, EMLX, vCal, vCard, EML, MSG, HTML, Zimbra, PDF, MBOX, and etc.

How to Convert OST to PST